Dynamically get grains for minions that match a (grain) role

[Nikolas Karavias]

I'm trying to do something really simple, but apparently it's not working out. I have a list of roles on my minions (passed via pillar) and I want to be able to query the grains of all minions that match a role.

My pillar top.sls:

base:

  '*':

    - default

  'roles:zookeeper':

    - mine

    - match: grain

    - zookeeper

All zookeeper nodes have the following minion config:

master: master02

grains:

  roles:

    - zookeeper

The "mine" pillar state looks like this:

mine_functions:

  test.ping: []

  grains.items: []

  pillar.items: []

  network.interfaces: []

Inside a file i want to generate a string for all minions that match 'roles:zookeeper' grain:

{%- set data = salt['mine.get']('roles:zookeeper', 'grains.items', 'grain') %}

{%- for node in data -%}

{{  node }}

{% endfor %}

The file after salt runs looks like this:

zoo01

zoo02..

... the rest of my minions that match 'roles:zookeeper'

1. Am I overcomplicating things? This sounds like overkill for just wanting to dynamically get grains (at least the id) for minions that match a role...
   
2. How do I get the output to be inline (zoo01,zoo02....) instead of having \n on each item getting printed?

[Stephen Spencer]

What version of salt are you using?

-S

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[Nikolas Karavias]

2015.5.2 

[Paul Reinking]

Hi Nikolas,

I think I get what your are trying to do and this snippet list all zookeepers that below to the same customer and environment on my systems.

# List all Zookeeper nodes within this cluster
{% for server, addrs in salt['mine.get']('G@customer:' ~ grains.customer ~ ' and G@environment:' ~ grains.environment ~ ' and G@roles:zok and G@cluster:' ~ grains.cluster, 'ip_addrs', expr_form='compound')|dictsort %}
server.{{loop.index}}={{addrs[0]}}:2888:3888
{% endfor %}

Paul

Op 11-07-15 om 23:59 schreef Nikolas Karavias:

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Kind regards,

Paul Reinking
 
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[Nikolas Karavias]

How would you get that to work by returning a list of strings? It seems that I can't iterate over a list and insert the items into another string.

In my previous example:

{%- set data = salt['mine.get']('roles:zookeeper', 'grains.items', 'grain') %}

{%- for node in data -%}

zookeepers={{  node }}

{% endfor %}

I want to be able to get zookeepers=node1,node2,node3 instead of 

zookeepers=node1

zookeepers=node2

zookeepers=node3

[Nikolas Karavias]

A little jinja RTFM worked...

 {%- set proxy= [] %}

 {%- for host, hostinfo in salt['mine.get']('G@roles:some_role and G@datacenter:env', 'network.interfaces','compound').items() %}

 {%- do proxy.append(host) %}

 {%- endfor %}

 proxy={{ proxy }}

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